Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2009, Vol. 20 ›› Issue (3): 184-187 doi: 10.13538/j.1001-8042/nst.20.184-187

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Effects of cooling channel blockage on fuel plate temperature in Tehran Research Reactor

TABBAKH Farshid   

  1. School of Nuclear Science, Institute of Nuclear Reactors and Accelerators, Atomic Energy Organization of Iran, Tehran, Iran
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TABBAKH Farshid. Effects of cooling channel blockage on fuel plate temperature in Tehran Research Reactor.Nuclear Science and Techniques, 2009, 20(3): 184-187     doi: 10.13538/j.1001-8042/nst.20.184-187

Abstract:

In this study, the variation of the temperature distribution of the fuel plate in Tehran Research Reactor core was studied in case of coolant channels blockage. While the experimental method is not possible, both the analytical and simulation methods were used to obtain the more reliable data. The results show that one channel blockage will increase the fuel temperature to about 100%, but it does not lead to clad melt down still. With further calculation and simulation it is understood that if the coolant velocity drops to 90% of its nominal value, it may causes the clad melting down. At least two channels with complete blockage even at the positions far from the core center can also melt down the clad.

Key words: Tehran Research Reactor (TRR), Coolant channel blockage, ANSYS11